Mecanim Animations

Hey guys/gals, I recently purchased some Mecanim Animations, but I can not figure out how to transfer the Animations into my current model, it came with Hero model, but I do not want to use him, I have searched for 3 days online now and can’t seem to figure out how to move the Animations to my current model I want to use.

At bottom it says "Parameter type “walk” does not match.
I know I have a walk animation, so why am I getting this and my
character gets all deformed and doesn’t animate nothing.

If you need any information please let me know.

During your 3 days of searching, did you consider watching/reading a tutorial about how to use Mecanim? Unity 4.0 - Mecanim Animation Tutorial - YouTube